:root {
    --primary-color: #00CED1;  /* 主蓝绿色 */
    --secondary-color: #20B2AA;  /* 海洋绿 */
    --light-color: #E0FFFF;  /* 浅蓝绿背景 */
    --dark-color: #008B8B;  /* 深蓝绿文字 */
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f8f9fa;
    color: #333;
}

/* 导航栏 */
.navbar {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
}

.nav-link {
    font-weight: 500;
    padding: 0.5rem 1rem;
}

/* 轮播图 */
.carousel-item {
    height: 500px;
    background-size: cover;
    background-position: center;
}

.carousel-caption {
    background: rgba(0, 0, 0, 0.6);
    border-radius: 10px;
    padding: 20px;
}

/* 热门卡片 */
.card {
    border: none;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s;
    margin-bottom: 20px;
}

.card:hover {
    transform: translateY(-5px);
}

.card-img-top {
    height: 200px;
    object-fit: cover;
}

.badge-tag {
    background-color: var(--primary-color);
    color: white;
}

/* 目的地推荐 */
.destination-card {
    position: relative;
    height: 300px;
    margin-bottom: 20px;
    border-radius: 10px;
    overflow: hidden;
}

.destination-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}

.destination-card:hover .destination-img {
    transform: scale(1.05);
}

.destination-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    color: white;
    padding: 20px;
}

/* 页脚 */
footer {
    background-color: var(--dark-color);
    color: white;
    padding: 40px 0;
    margin-top: 50px;
}

.social-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255,255,255,0.2);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-right: 10px;
    transition: all 0.3s;
}

.social-icon:hover {
    background-color: var(--primary-color);
    transform: translateY(-3px);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .carousel-item {
        height: 300px;
    }
}